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On color induction with reference to color recognition (1916)
Almack, Mary Ruth, 1893- · [Lancaster, Pa.?] · leaf 11
(Almack and Arps.) PLATE 4. … Plate IV. Modified Kiihlmann Time Apparatus.Color sense
Internet Archive · University of Illinois Urbana-Champaign · Public domain (published before 1931). Free to use for anything.
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